Investigation of the uniformity of seed distribution during sowing of winter wheat

Abstract

One of the main indicators of high-quality sowing of seeds of agricultural crops is their uniform distribution along the length, because the main influence is exerted by the sowing apparatus. In the proposed work, the sowing of seeds of grain crops using a coil seeding machine is considered as an object of research. As a subject of research, the dependences of the uniformity of the distribution of seeds along the length of the furrow on the unevenness of the specific working volume of the coil, the rotation frequency of the blower of the pneumatic seeder and the seeding rate are considered. The aim of the work is to improve the uniformity of the distribution of the area of nutrition that falls on each plant with an ordinary method of sowing winter wheat. The paper presents the results of theoretical prerequisites for determining the working volume of the seeding coil, the results of field experiments of the seeding apparatus using coils with different geometric characteristics. The analysis of the uniformity of seed distribution using regression analysis and Bayesian networks is carried out. The resulting determination coefficient of 0.82 allows us to conclude that the resulting mathematical model can be used for practical purposes. It is noted that the proposed cellular-honeycomb seeding coil stands out qualitatively among the grooved and grooved-screw.